School is back in session at Gotham Academy and, if the new cover variants for the returning DC Comics series are any indication, the students will be learning a little more about architecture. Non-Euclidean architecture, that is.

DC Comics has revealed cover variants for the first three issues of "Gotham Academy: Second Semester," the returning comic book series in which heroine Olive Silverlock and crew unravel the many mysteries of the prestigious Gotham Academy, all while navigating the social pecking order.

The cover variants, all of which illustrated by artist Fiona Staples, are reminiscent of M.C. Escher's famed woodcuts depicting vast, impossible architecture. In the variants, the series' most prominent characters walk, sit and traverse obstacles at geometrically unfathomable angles.

The series' return pits Silverlock and her Detective Club against a new round of mysteries, not the least of which being the newly formed competing Witch Club. Meanwhile, a new, mysterious student has entered the fray during the winter holiday. The interloper could prove to be a great friend, or a whole new bag of problems.

"Gotham Academy: Second Semester" is written by Becky Cloonan, Brenden Fletcher and Karl Kerschl, with art by Adam Archer and Sandra Hope, and kicks off on September 14, 2016.

"Gotham Academy: Second Semester" #1 hits stands on September 14.